Mathematics, 21.05.2020 03:06 TVASALLO31

Tenho a seguinte escolha: ou compro 20 unidades de um produto com todo o dinheiro que tenho, ou compro apenas 14 unidades e ainda me sobra um troco de R$ 30,00. Qual o valor unitário deste produto?

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Tenho a seguinte escolha: ou compro 20 unidades de um produto com todo o dinheiro que tenho, ou comp...